Washington, Sept. 4 : People whose parents are Holocaust survivors with post-traumatic stress disorder (PTSD) have on average lower levels of the stress hormone cortisol than the adult offspring of parents without PTSD, according a small study.

Washington, Sept. 4 : Teenagers' likelihood of becoming established smokers, a category of smokers who smoke at least 100 cigarettes in their lifetimes, increases with the amount of smoking they see in movies, says a report.

Washington, Sept 4 : A research has suggested that arthritis of the knee may be the first sign of a type of lung cancer, which is difficult to treat, in heavy smokers.

The researchers studied the case notes of all patients suffering form rheumatic disorders.

Between 2000 and 2005, of 6500 patients, 296 (4.4 pct) were cases of monoarthritis-inflammation in just one joint-of the knee.

Washington, Sept. 4 : Scientists from Nottingham University have discovered monoclonal antibodies that may help make a successful vaccine for Hepatitis C, the single biggest cause of people requiring a liver transplant.

London, Sept 3 : A new study has found a possible link between aluminium in deodorants and breast cancer.

The study observed that women, who have had mastectomies, carried high levels of the metal in their outer breasts.

Dr Chris Exley, who tested 17 patients at Wythenshaw Hospital, Manchester, said that all of them had the metal concentrate closest to their underarms

"They all had higher concentrations of aluminium in the breast tissue closest to the underarm," the Mirror quoted Dr Chris Exley, as saying.